GURPS Planet of AdventurePlanet of Adventure is a science fiction setting sourcebook for the GURPS role-playing game system, adapted by James L. Cambias from the fiction of Jack Vance.ContentsGURPS Planet of Adventure describes a distant world populated by many varied alien and half-alien races, set in the world of the Planet of Adventure series of novels by Jack Vance.Publication historyThe book was designed by James L. Cambias, and published by Steve Jackson Games in 2003.